Visual predation during springtime foraging of the North Atlantic right whale (Eubalaena glacialis)

Fasick, Jeffry I.; Baumgartner, Mark F.; Cronin, Thomas W.; Nickle, Benjamin; Kezmoh, Lorren J.

doi:10.1111/mms.12417

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Visual predation during springtime foraging of the North Atlantic right whale (Eubalaena glacialis)

2017
By Fasick, Jeffry I. ; Baumgartner, Mark F. ; Cronin, Thomas W. ; ...
Source: Marine Mammal Science, 33(4), 991-1013

[PDF-844.42 KB]

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Journal Title:

Marine Mammal Science
Personal Author:

Fasick, Jeffry I. ; Baumgartner, Mark F. ; Cronin, Thomas W. ; Nickle, Benjamin ; Kezmoh, Lorren J.

Fasick, Jeffry I. ; Baumgartner, Mark F. ; Cronin, Thomas W. ; Nickle, Benjamin ; Kezmoh, Lorren J. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service)
Description:

To assess the role that vision plays in the ability of the North Atlantic right whale (Eubalaena glacialis) to detect its primary prey species, the calanoid copepod Calanus finmarchicus, we have compared the absorbance spectrum of the E. glacialis rod visual pigment, the transmittance spectra of C. finmarchicus carotenoid pigments, as well as the downwelling irradiance and horizontal radiance spectra collected during springtime at three locations in the western Gulf of Maine. The E. glacialis rod visual pigment absorbs light maximally at 493 nm, while microspectrophotometric measurements of the C. finmarchicus carotenoid pigments reveal transmission spectra with minima matching very well with the E. glacialis rod visual pigment absorbance spectra maximum. Springtime spectral downwelling irradiance and horizontal radiance values from the surface waters of Cape Cod Bay and at all depths in Great South Channel overlap the E. glacialis rod absorbance spectrum, allowing C. finmarchicus to appear as a high‐contrast dark silhouette against a bright background spacelight, thus facilitating visually guided contrast foraging. In contrast, spectral downwelling irradiance and horizontal radiance at depth in Cape Cod Bay, and all depths in Wilkinson Basin, do not overlap the E. glacialis rod absorbance spectrum, providing little if any useful light for contrast vision.
Keywords:

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Aquatic Science Ecology, Evolution, Behavior And Systematics
Source:

Marine Mammal Science, 33(4), 991-1013
DOI:

https://doi.org/10.1111/mms.12417
ISSN:

0824-0469;1748-7692;
Format:

PDF
Publisher:

Wiley
Document Type:

Journal Article
Funding:

Grant no. NA09NMF4520413
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Accepted Manuscript
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Library
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urn:sha256:22784f6c21fbff25519c1ad780eda1b26d35c3c69e1a48e535bac1702df0323b
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https://repository.library.noaa.gov/view/noaa/56943/noaa_56943_DS1.pdf
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Visual predation during springtime foraging of the North Atlantic right whale (Eubalaena glacialis)

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